nvim-tree.lua/scripts/update-help.sh

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#!/bin/sh
# run after changing nvim-tree.lua DEFAULT_OPTS or keymap.lua M.default_on_attach
# scrapes and updates nvim-tree-lua.txt and keymap-legacy.lua
# run from repository root: scripts/update-help.sh
#
# DEFAULT_OPTS
#
begin="BEGIN_DEFAULT_OPTS"
end="END_DEFAULT_OPTS"
# scrape DEFAULT_OPTS, indented at 2
sed -n -e "/${begin}/,/${end}/{ /${begin}/d; /${end}/d; p; }" lua/nvim-tree.lua > /tmp/DEFAULT_OPTS.2.lua
# indent some more
sed -e "s/^ / /" /tmp/DEFAULT_OPTS.2.lua > /tmp/DEFAULT_OPTS.6.lua
# help, indented at 6
sed -i -e "/${begin}/,/${end}/{ /${begin}/{p; r /tmp/DEFAULT_OPTS.6.lua
}; /${end}/p; d; }" doc/nvim-tree-lua.txt
#
# DEFAULT_ON_ATTACH
#
begin="BEGIN_DEFAULT_ON_ATTACH"
end="END_DEFAULT_ON_ATTACH"
# scrape DEFAULT_ON_ATTACH, indented at 2
sed -n -e "/${begin}/,/${end}/{ /${begin}/d; /${end}/d; p; }" lua/nvim-tree/keymap.lua > /tmp/DEFAULT_ON_ATTACH.lua
# help
sed -i -e "/${begin}/,/${end}/{ /${begin}/{p; r /tmp/DEFAULT_ON_ATTACH.lua
}; /${end}/p; d; }" doc/nvim-tree-lua.txt
# legacy keymap
sed -i -e "/${begin}/,/${end}/{ /${begin}/{p; r /tmp/DEFAULT_ON_ATTACH.lua
}; /${end}/p; d; }" lua/nvim-tree/keymap-legacy.lua